Parameter ValueTU 5411-098-00279410-20071. Kappa number 21-302. Mechanical strength when ground in a Pulp fibermaster with a Shopper-Riegler index of up to 60, breaking length, not less 87003. Ash content, %, not more 1.04. Dirt count in 500 g motes sq mm of weight, pcs., not more: area in light...